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Edmonton in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Edmonton in September and see if it is worth visiting.
Check flight prices to Edmonton on Avionero:
September

Weather in Edmonton in September 2025

Good Weather
Mild
🌧️
Rainy
Are you considering a trip to Edmonton in September? Well, the weather is usually on your side with an average maximum temperature of +18°C and about 7 sunny days. Just keep in mind that there may be some rain, with an average of 12 rainy days and 42 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+18°C
Avg. max. temperature
-7°C
Min.
+33°C
Max.
42 mm
Total precipitation
67%
Avg. humidity
3 m/s
Avg. wind
7 ☀️
Sunny Days
10 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Edmonton has good weather in September.

Average temperature in Edmonton in September

Here are the expected maximum, average and minimum temperatures in Edmonton for September based on the historical data.
Last Year
Historical Data

The temperature in September is +21°C on average, with a range between a maximum of +26°C during the day and a minimum of -3°C at night.

The average maximum temperature goes down 52% by the end of the month, compared with the beginning of the month, from +24°C to +9°C.

Is Edmonton warm or cold in September?

Edmonton is typically mild in September.

Maximum temperatures go down compared to the previous month from +23°C to +18°C. The minimum temperature also goes down from +11°C to +6°C.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how September is compared to other months in Edmonton:

Climate in Edmonton in September

Edmonton weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+23°C+18°C+11°C
Min. temperature
-1°C-7°C-24°C
Max. temperature
+35°C+33°C+28°C
Rainfall
67 mm42 mm16 mm
Wind
2 m/s3 m/s3 m/s
Humidity
68%67%66%
Air pressure
1013 HPa1013 HPa1012 HPa
Sunny days
777
Cloudy days
71013
Rainy days
15128
Snowy days
014

September weather is still as good as in August. It’s getting colder in September. From +23°C in the day, the average maximum temperature lowers to +18°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 67 mm to 42 mm. It feels drier, as humidity decreases from 68% to 67%. Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 7 sunny days during the month.

October brings much the same weather, it remains good.

Wind

Wind speed in Edmonton in September based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Edmonton is gradually decreasing during September, going from 2 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Edmonton based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 33%, leading to total precipitation of around 47 mm. The maximum amount of rainfall per day is around 20 mm, which is considered light rain. September is a pretty wet month with over 10 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Edmonton wettest month is July, where a typical day has a 52% chance of precipitation and 103 mm of rainfall per day. February, on the other hand, is the driest month with a mere 3% chance of precipitation and 1 mm of rainfall per day.

How was the weather last September in Edmonton?

This is the weather in Edmonton in September 2023:
1 September
☁️
+24°C
2 September
☀️
+24°C
3 September
☁️
+24°C
4 September
☁️
+16°C
5 September
🌫️
+16°C
6 September
🌧️
+19°C
7 September
🌧️
+19°C
8 September
☀️
+22°C
9 September
☀️
+24°C
10 September
☀️
+25°C
11 September
☀️
+25°C
12 September
☁️
+26°C
13 September
☁️
+21°C
14 September
☀️
+19°C
15 September
☀️
+25°C
16 September
☀️
+25°C
17 September
☀️
+23°C
18 September
☀️
+21°C
19 September
☀️
+17°C
20 September
🌧️
+16°C
21 September
☁️
+18°C
22 September
☀️
+22°C
23 September
☀️
+22°C
24 September
☁️
+22°C
25 September
☀️
+22°C
26 September
☁️
+21°C
27 September
☁️
+20°C
28 September
☁️
+18°C
29 September
🌧️
+15°C
30 September
☁️
+9°C
In September 2023 Edmonton had 14 sunny days, 11 cloudy days, and 4 rainy days. The average maximum temperature was +21°C, with an absolute maximum of +26°C and a minimum of +9°C. The average humidity was 72%, with a maximum of 100% and a minimum of 32%. The average wind speed was 2 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change over Years

This is how Edmonton climate have been changing during last 43 years period.

The climate in Edmonton in September has not changed much over the last 43 years.

The average temperature was the lowest in 1996 (+6°C) and the highest in 2023 (+12°C). The driest year was 2002 with only 185 mm of rainfall, and the wettest year was 2020 with 848 mm.

FAQ

Frequently asked questions about the weather in Edmonton in September:

Is September a good time to visit Edmonton?

September is a really good time to go to Edmonton. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Edmonton.

Can you sunbathe in Edmonton in September?

September has mild temperatures in Edmonton. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Edmonton rainy in September?

Edmonton is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Edmonton in September?

Usually, it’s not very sunny in Edmonton in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Canada

Check out the weather for other cities in Canada.

Monthly weather in Edmonton

Source of the data

For this page, we’ve looked at the typical weather in Edmonton, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.